Fun is the enjoyment of pleasure, particularly in leisure activities. Fun is an experience — short-term, often unexpected, informal, not cerebral and generally purposeless. It is an enjoyable distraction, diverting the mind and body from any serious task or contributing an extra dimension to it. Although particularly associated with recreation and play, fun may be encountered during work, social functions, and even seemingly mundane activities of daily living. It may often have little to no logical basis, and opinions on whether or not an activity is fun may differ. A distinction between enjoyment and fun is difficult but possible to articulate,fun being a more spontaneous, playful, or active event. There are psychological and physiological implications to the experience of fun.

A video game is an electronic game that involves human interaction with a user interface to generate visual feedback on a video device. The word video in video game traditionally referred to a raster display device, but it now implies any type of display device that can produce two- or three-dimensional images. The electronic systems used to play video games are known as platforms; examples of these are personal computers and video game consoles. These platforms range from large mainframe computers to small handheld devices. Specialized video games such as arcade games, while previously common, have gradually declined in use. Video games have gone on to become an art form and industry.
The input device primarily used to manipulate video games is called a game controller, and varies across platforms. For example, a controller might consist of only a button and a joystick, while another may feature a dozen buttons and one or more joysticks. Early personal computer games often n...

A puzzle is a game, problem, or toy that tests a person's ingenuity or knowledge. In a puzzle, one is required to put pieces together in a logical way, in order to arrive at the correct solution of the puzzle. There are different types of puzzles for different ages, such as crossword puzzles, word-search puzzles, number puzzles, or logic puzzles.
Puzzles are often devised as a form of entertainment but they can also arise from serious mathematical or logistical problems. In such cases, their solution may be a significant contribution to mathematical research.
Solutions of puzzles often require the recognition of patterns and the creation of a particular kind of order. People with a high level of inductive reasoning aptitude may be better at solving such puzzles than others. But puzzles based upon inquiry and discovery may be solved more easily by those with good deduction skills. Deductive reasoning improves with practice.
Some notable creators of puzzles are Sam Loyd, Henry ...